cdosrun Posted December 29, 2005 Posted December 29, 2005 Hello, just a quick question that someone maybe able to answer for me; my neighbours alarm went off a little while ago, only the external siren, not internal at all. As it was in the small hours of the morning, and he doesn't have a maintenance contract, I disconnected the power feed for the bellbox and powered it from the battery, which silenced it immediately. The following day I returned with multi-meter etc, and couln't find any problem, returned the bell hold-off to the correct terminals in the panel and left it. Tonight (3+ weeks later), about 10 minutes ago, the same thing happened, this time I tried moving the bell hold off leads to the auxilliary power which resulted in a sort of chirping from the external box. Only with the hold-off supplied entirely from the battery did the alarm silence. I checked the auxilliary voltage on my meter and it was reading 7 volts (obviously a little low, and enough to trigger the box! The external box was only taking 2-10ma whilst chirping). Am I right in thinking that this is almost certainly a panel problem? I think he will contact the installing company tomorrow, so I won't be involved. Just for reference, the system has never been serviced and is at least several years old (although both batteries seem to be alive, if not well), could the lead acid battery be causing this by drawing too much current? Thanks, Andrew Any statement made or information provided in this post are the mere opinions of the author, and no inferrence is to be made as to the quality of information nor should any reliance be placed upon its contents.
dpaengineer Posted December 29, 2005 Posted December 29, 2005 Sounds like a AC problem and then the panel battery is too drained to supply sufficient current to run the entire system when AC is lost. Looks like Batt needs changing (Good indication of a desperate need for service) and also the AC loss looking into. One for the pro's to get it done right Trade Member
cdosrun Posted December 29, 2005 Author Posted December 29, 2005 Thank you dpaengineer, I intend to leave it to the professionals, AC was supplying the panel, but the transformer and regulator were cool to the touch, so perhaps there is a problem there. The panel was quite happy when I supplied it from the battery though, it detected the mains loss and beeped. It went into an internal tamper alarm on battery too. Anyway, thankfully, the pros will be called out today. Andrew Any statement made or information provided in this post are the mere opinions of the author, and no inferrence is to be made as to the quality of information nor should any reliance be placed upon its contents.
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